Nut-wrench



(No Model.)

J. GEISLER.

NUT WRENCH.

No. 498,782. Patented June 6,1893.

I a E 11y VEN TOR. yaw 1 5114 ATTORNEY UNITED STATES PATENT OFFICE.

JOHN GEISLER, OF DAYTON, OIlIO.

NUT-WRENCH.

SPECIFICATION forming part of Letters Patent No. 498,782, dated June 6,1893. Application filed February 17, 1393. Serial No. 462,675. (Nomodel.)

, in Nutrenches, of which the following is a specification.

My invention relates to new and useful improvements in nut-wrenches; theobject of the invention is to provide a wrenchso constructed that it maybe conveniently and quickly adjusted to suit the diameter, of any nut orother article it may be used upon.

The nature of my invention consists of a spring-actuated pawl andratchet mechanism by means of which the movable jaw may be easilyadjusted to any desirable position, and therein maintained most rigidly,regardless of the amount of strain it maybe called upon to stand.

In the drawings accompanying the specification, in which like lettersdenote corresponding parts: Figure 1. is a side elevation of a wrenchwith my improvement; Fig. 2. a longitudinal sectional view through thecenter; Fig. 3. a detail detached plan view of the oollar; Fig. 4: adetail detached side elevation of the same; Fig. 5. a detail, detachedhorizontal view of the ratchet pawl, showing the necessary curvature inthe shank thereof; Fig. 6. a detail, detached plan view of same; Fig. 7.a vertical section through the center of the collar, showing the shankof the pawl in section, the position it occupies, when the pawl is freefrom engagement with the shank A; Fig. 8. a top view of the device,broken away on the line XX of Fig. 1; Fig. 9. a horizontal section ofthe jaws with part of the shank broken away, showing the pawl free fromengagement.

The letter A represents the shank, at one end of which is a fixed jaw Aconveniently provided with claws for removing tacks or nails, while theother end is constructed to perform the work of a screw driver; to thisend of the shank the handleB is secured, and maintained thereon, by thenut a. The shank is provided with a series of ratchet teeth 0, on itslower surface, for engagement with the tooth of the pawl I), having theinclined portion hand a spring metal shank I)" turned at right angles atthe end b The object of the peculiar'construction of this pawl will beexplained hereinafter. 0 represents the movablejaw, having asleeveportion 0. Through this jaw there is a central opening (1" conforming tothe shape of shank A, in which said shank is mortised; a slot extendsdownwardly longitudinally from the central opening, and through thesleeve, as at dinto which the shank bof the ratchet pawl fits; byturning the collar I) the recessf' therein, is brought horizontallyabove the slot d, at which time the shank Z) of the pawl is permitted tospring into the recess f through the slot (Z, and thereby the said pawlis freed from engagement with the teeth on the shank A. Oonsequentl ythe movable jaw may be slid along the shank and the pawl be made toengage with the teeth 0 at any desired distance from the fixed jaw. Itwill be understood that the slot d extends entirely through thethickness of the sleeve 0', so that the shank b" of the ratchet pawl ispermitted to spring the required distance to become disengaged with theteeth 0. The slot also extends longitudinally through the jawterminating at the forward end in a recess or spring seat cl ofsufficient magnitude to receive a spiral spring 6 which is inclosed andconfined therein by the shank b", the end b of which incloses the end ofthe recess, thereby maintaining the spring 6 within said recess andcausing it to apply the necessary tension to draw the pawl sufficientlyforward whenreleased from the teeth 0.

llavilig described the constructive features of my invention, itsoperation will be briefly stated.

It will be noted that the slotted portion of the movable jaw, indicatedby d, is in the lower portion of the sleeve of said jaw, or that partnearest the ratchet teeth of the shank A. When the recess f in thecollar D is brought immediately above the slot d, the shank b" of thepawl, by reason of the natural resiliency thereof, springs upwardintothe recess fiand the tooth of said pawl thereupon withdraws from theratchet teeth (3; at the same instant the spring 6, the purpose of whichis to keep the pawl normally against the inclined sur face of thecollar, draws the pawl forwardly by pressing against the portionthereof. To secure the movable jaw at any adjustment, the collarD isturned in the direction to bring the pawl gradually over the inclinedsurface f. This presses the pawl downwardly in the direction of theshankAand out of the recess f over the beveled surface thereof, therebycompressingthe springe, as thepawl is brought against the inclinedportion of the collar, and the spring metal shank bot' the pawl in thedirection of the shank A. It will be understood that the pawl becomesengaged with the teethc immediately upon entering the incline of thecollar, and is released therefrom when it is entirely off of theinclined portion of said collar. The collar D is maintained upon thesleeve 0' by the guide plated entering the groove 'i' onsaid collar,which collar is maintained in a fixed axis of rotation by the plate t'which has a downwardly projecting flange that enters the groove 6' onsaid collar; this plate is adjustably attached to the movable jaw.

Having described my invention, I claim 1. In a nut wrench, thecombination with the shank A provided with ratchet teeth and a fixed jawhaving a sleeve portion integral therewith, and a longitudinal slotextending through said sleeve as at d, and terminating in a recess orspring seat 61', a spiral spring adapted to fit said recess, a ratchetpawl adapted to fit in said slot and to inclose the end of the recessd,a collarwith an annular incline and an annular groove mounted on thesleeve portion C and engaging with the ratchet pawl, substantially asherein described.

2. In a nutwrench, the combination with the shank having ratchet teeththereon and a fixed jaw; of a movable jaw with a sleeve portion, a slotextending through said movable jaw terminating in front in a recess orspring seat, a collar having an annular incline and groove, a ratchetpawl operated by said collar to release the movable jaw or maintain itin a fixed position, substantially as described.

3. The combination of the fixed jaw, the shank A with ratchet teeth, themovable jaw with a slot therein, terminating in a recess d, a springseated in said recess, the pawl seated in the slot and inclosing saidspring within the recess, the collarD provided with the annularinclinefand the annular groove 2", the plate 7:110 maintain said collarin position, substantially as described.

In testimony whereof I have hereunto set my hand this 7th day ofFebruary, 1893.

JOHN GEISLER.

Witnesses:

GEORGE H. WOOD, R. J. MOOARTY.

